Wheel attachment.



1. FRIEMAN. WHEEL ATTACHMENT.

APPLICATION HLED APR.23. 1918- lutex'lted Dec. 10, 1918.

T FFICE.

.recon emanan, or carence, rumore. waant Armonium'.

Specification ot Letters Patent.

Patented Dee. 10,1918.

Application led .April 23, 1918.' Serial No. 230.261.

T o all whom it may concern -Be it known that I, JAcon FimzMAN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Wheel Attachments, of which the following is a specification.

The present invention relates to improvements in attachments for motor vehicle driving wheels designed for facilitating the operation of extricating a vehicle from ruta', holes or the like, in ice, snow, sand or soft earth.

The novel characteristics of the device consist in the applicable to comes partially embedded, with projections which not only aiford gripping action but act to lill the rut at each revolution of the wheel, while the latter is sustained by a sup' porting surface constitutingan important.

feature of my invention.

In addition to the foregoing, an object in view is to provide novel attaching or clamping means for holding the attachment in place and for withstanding the strains incident to the use -of the device as above contemplated. v

With thefabove and other objects in view, this invention consists in the construction, combinationand arrangement of parts all as hereinafter more fully described, claimed and illustrated in the accompanying drawings, in which:

Figure 1 is asidel elevation of a portion of a vehicle wheel, showing my attachment applied in operative position thereon;

Figs. 2 and '3 are sectional views on the lines (i2-2 and 3 3, respectively, of Fig. l; an

Fig. 4 is a top -plan of the attachment.

Throu hout the following detail description, an on the severalgur'es of the 'drawing, similar parts arereferred to by like 45 re er ence characters. Referring to the drawing, l designates a conventional type of vmotor vehicle wheel, and 2 the tire t erefor upon which the device forming the subject vmatter of'this invention is applied. This attachment consists of a tread member or plateS which conforms to the shape of the tire or tread of the Wheel both as regards its circumferen-I tial and transverse contours. From this plate there project a number of lugs 4, triangular shaped 1n cross section. referably provision of a tread memberv the wheel when the same be- ,vice in order that the opposite effective faces of these projecting lugs are somewhat concaved as will be best seen in Fig. 4, because in performing their function they act in the nature of shovels. From this tread. plate 3, an vei:- tension plate 5 projects laterally and substantially in alinement with the riphery of the wheel tire.. The surface oiphis extension is a supporting surface as will from a description of the use of the device following herein. Projecting from the under surface of the extension plate are a pair of threaded boltmembers 6 which pass through suitable openings in the clamping or attaching element of the device hereinafter referred to and carry winged nuts 7, instrumental in holdingthe device in place. I employ a special form of clamping means for the tread plate, which as will be observed from Fig. l comprises the curved plate 8 and the straight plate 9 joining the ends of the former. Integrally attachledand projecting laterally from the ends of the segmental shaped member are a pair of rim enga 'ng or gripping arms 10, by means of whici the attachment is positively held on the wheel. 'It should be particularly observed that thesearms are arranged in such s aced relation to each other as to engage itliout'opposite sides of certain of the spokes of the wheel and therefore the attachment is prevented from movement in either direction circumferentially of the wheel. Further than this the curved plate 8 is so disposed as to conform to the curvature of the wheel riinagainst the, side. of which it is adapted to be pressed in the use of the dethe supporting stress applicable to the'extension part 5 will be transferred to the wheel rim. lThis is an important feature of my invention. While it would be possible to dispense with the plate or part 9 as will be obvious,I this plate also subserves a distinctly advantageous feature because considerable pressure may be exerted by the nuts 7 to afford the necessary gripping action without distorting the attachment or segmental shaped member.

While I have illustrated this device as segmental in form, it may be of larger construction so as to cover a greater part of the wheel tread, or all of it if desired. At any rate in the use ofthe device, and assuming that the vehicle wheel has sunk into such a depression in the surface from which the motor is ineffective to'pull the same owing `and ride upon the su to sli page or loss of traction, the device is. attac ed in place at'the top ofthe wheel, as shown in Fig. 1. As the driving power now turns the wheel and the .attachment around, the lateral extension will meet with rface of the ground directly adjacent to' the outside of the wheel and by reason of its will not sink so deeply into the earth, thereby lifting the vehicle more or less. The lugs or projections 4 engage and move the earth directly in front ofthe wheel into the rut beneath the wheel, filling the same more or less. Continuous revolution of the wheel simply continues the lifting vaction above referred to until suicient gripping of the attachment is obtained to move the vehicle forward and out of the rut whereupon the attachmentis displaced, preferably.

device is simattachable to place found accessory for It will be apparent that the ple in construction and readily the ywheel of a vehicle at an automobile equipment.

Having thus described my invention, what I claim as new is:`

1. In a wheel attachment of the class described, the combination with a tread plate adapted tobe attached to the wheel tread and having projections extending therefrom, of an extension arranged laterally of the tread plate and constituting supporting means for sustaining the wheel upon the surface adjacentthereto, and means for attaching the plate to the wheel including a .rim engaging element conforming to the circumferential contour of the rim arranged in engagement therewith beneath the extension to transmit the supporting stress to'the lateral periphery of the wheel.

2. In a wheel attachment of ythe class described, the combination with a tread plate adapted to be attached. to the wheel tread and having projections extending therefrom,

greater surface area v menare of an extension arranged laterally of .the

tread late and constituting supporting means or sustaining the wheel upon the surface adjacent thereto, and means for attaching the plate to the wheel including a wheel engaging element conforming to the circumferential contour of the wheel and clamping arms arranged to grip the wheel.

3. In a wheel attachment of the class described, the combination with a .tread plate adapted tobc attached to the wheel tread and having projectionsextending therefrom, Y

of an extension arranged laterally 'of the tread plate and constituting supporting means for sustaining the wheel upon the surface adjacent thereto, a segmental attach ing member arranged to -engage the wheel felly and rim, and means connecting the member to the extension aforesaid.

4. In a wheel attachment of the class described, the combination of a tread plate adapted Ito be disposed on the wheel tire and having a laterally extending portion for sustaining the wheel on the surface adjacent thereto, connecting members extending from said last named portion, a clampingmember with which said connecting members are ,connectedI including a curved wheel engaging plate, and wheel gripping arranged in spaced relation to each other as to engage' with the wheel atopposite sides of certain of the wheel spokes, and means for connecting the tread plate and the clamping means together.

- In testimony whereof I affix my signature.

JACOB FRIEMAN. 

